Cometic C9691 Big Bore Head Gasket 3.625" Bore .040" Thickness

The Cometic C9691 is a high-performance big bore head gasket designed for engines with a 3-5/8" (3.625") cylinder bore diameter and .040" compressed thickness. Cometic gaskets are engineered using advanced materials and manufacturing processes to provide superior sealing performance in demanding automotive and powersports applications.

Key Features:

• Big bore design accommodates 3.625" cylinder bore diameter
• .040" compressed gasket thickness for precise compression ratio tuning
• Multi-Layer Steel (MLS) construction provides excellent sealing and durability
• Engineered to withstand high cylinder pressures and temperatures
• Precision laser-cut for accurate fitment and consistent sealing
• Ideal for high-performance and racing applications

Cometic gaskets are a trusted choice among engine builders and performance enthusiasts for their reliability and quality construction. This head gasket is designed to provide a superior seal between the cylinder head and engine block, preventing combustion gas leakage and coolant contamination.